I'm going to be picking up a tank at a local vendor in the next few days so I can pop it on my Silver Bullet. I'm going to be vaping @ 3.7v with an 18650 AW IMR. Not sure on the tank yet, thinking smoketech maybe, but I'm now looking for the best cartomizer that will provide me with the best vapor production and flavor. I've seen awesome things about the ikenvape fusion and the ikenvape premiums (same thing as fusion but with 510 threading), but they are all out of stock. Any other suggestions for other cartos?